Spiral slideway.



PATENTED AUG. 21, 1906. W. H. LOGAN. SPIRAL SLIDEWAY.

APPLICATION FILED JAN. 1 0, 1905.

WVILLIAM HUME LOGAN, OF LOUISVILLE, KENTUCKY.

SPIRAL SLIDEWAY.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed January 10,1905. Serial No. ZLOAYQ.

To all whmn it may concern.-

Be it known that I, WILLIAM HUME Lo- GAN, a citizen of the UnitedStates, residing at Louisville, in the county of Jefferson and State ofKentucky, have invented certain new and useful Improvements in SpiralSlideways; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

My invention relates to fire-escapes or spiral slideways, and has forits object to provide a device of this class which is simple and easy toconstruct and at the same time strong, durable, and eflicient.

' In that class of fire-escapes embodying a spiral chute or slideway anda central standpipe or support probably the most difficult point intheir construction is the securing the leaves or sections of which theslideway is made up to the central standpipe. constructions have beentried. The leaves or sections have been provided with collars integralwith the leaves or sections, and numerous other constructions have beenemployed to more or less advantage. However, this part of the slidewayhas always-been difficult to construct, and consequently expen sive.

It is for the purpose of providing a simple and easy construction forsecuring the leaves or sections of the slideway to the central supportthat I have made my present invention; and with this object in view myinvention consists in riveting or boltin the leaves or sections of theslideway directly to the stand pipe or support after first bending theinner edges of the leaves or sections a short distance around thestand-pipe.

Referring to the accompanyin drawings, Figure 1 is a perspective viewshowing the outer casing broken away and a portion of a leaf of theslideway secured to the stand-pipe. Fig. 2 is a horizontal sectionalview taken through the stand-pipe and leaf. Fig. 3 is a Various similarview showing leaf bolted to the standpipe, and Fig. 4 is an enlargedsectional view showing the stand-pipe and inner portion of the leaf. 7

Like numerals of reference indicate the same parts throughout theseveral figures, in v which 1 indicates the outer cylindrical casing; 2,the central stand-pipe or support 3, a leaf or section of the chute orslideway, and 4 indicates the screws or bolts securing the leaves orsections to the stand-pipe.

In order to secure the leaves or sections 3 to the stand-pipe 2, thesaid leaves or sections are bent at 5, near the inner edges thereof, atan angle to the body of the slideway to form a flange 6, said flange 6being curved to conform to the stand-pipe. The leaf or section is thenbent or twisted spirally, the flange 6 following the stand-pipe, and isscrewed or bolted thereto by screws or rivets 4, as shown.

Having thus fully described my invention, I do not wish to be understoodas limiting myself to the exact construction as herein set forth, asvarious slight changes may be made therein which would fall within thelimit and scope of my invention, and I consider myself clearly entitledto all such changes and modifications.

What I claim as my invention, and desire to secure by Letters Patent ofthe United States, is

In a device of the character described, the combination with a centralsupport, of a spiral slideway the portion adjacent its inner edge bentat an angle to the body of the slideway to form a flange to conform tothe said central support, and to engage only a portion of the surface ofsaid central support, and means for fastening the slideway to the saidcentral support, said fastening means entering the said central support,substantially as described.

In testimony whereof I QIHlX my signature in presence of two witnesses.

WILLIAM HUME LOGAN.

Witnesses:

' A. T. HORRELL,

OLIVIA WHITEI-IURST.

